• Journal of Korea Game Society
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• v.16 no.6
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• pp.131-142
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• 2016

Recently, a variety of methodologies based on the use of educational coding robots have been proposed and experimented in newly emerging korean educational coding markets. Due to imprecise movement accuracy of the existing coding robots, however, such robots are mainly used as a toy. Inspired by these observations, we developed a simple adjustment method during robot movements, which is based on the observation results of 6 line-tracking sensors: 3 sensors in the center of a robot and other 3 sensors at the front. These sensors help to determine whether the robot is in the right location and whether it rotates as expected. Through the well-designed experiments, we report the effectiveness of our proposed solution: the average distance error of 1.57cm and the average degree error of 2.38 degree before and after complex movements. In near future, we hope our method to be popularly used in various educational coding robot platforms.

• Journal of Biomedical Engineering Research
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• v.40 no.6
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• pp.223-229
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• 2019

The number of knee-related disease patients and knee joint surgeries is steadily increasing every year, and for knee rehabilitation training for these knee joint patients, it is necessary to strengthen the muscle of vastus medialis and quadriceps femoris. However, because of the cost and time-consuming difficulties of receiving regular hospital treatment in the course of knee rehabilitation, we developed knee exoskeleton using rapid prototype for knee rehabilitation with feedback from the electromyogram (EMG) and inertia motion unit (IMU) sensor. The modules was built on the basis of EMG and an IMU sensor applied complementary filter, measuring muscle activity in the vastus medialis and the range of joint operation of the knee, and then performing the game based on this measurement. The IMU sensor performed up to 97.2% accuracy in experiments with ten subjects. The functional game contents consisted of an exergaming platform based on EMG and IMU for the real-time monitoring and performance assessment of personalized isometric and isotonic exercises. This study combined EMG and IMU-based functional game with knee rehabilitation training to enable voluntary rehabilitation training by providing immediate feedback to patients through biometric information, thereby enhancing muscle strength efficiency of rehabilitation.

• KIPS Transactions on Computer and Communication Systems
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• v.2 no.4
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• pp.163-176
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• 2013

Cloud-based streaming game service has numerous merits, but it may suffer from presentation latency in a thin-client. It is an important issue especially for game service which needs instantaneous response to user inputs. This research proposes the methods for reducing the presentation latency between the server unit and the thin-client unit. The approaches proposed to be employed with server unit include the source/sync video format equalization, encoding format configuration according to the media type, and the S/W implementation for transmitting clock periodically. The methods for the thin-client unit include the decreasing the number of instructions, use of light encryption algorithm, and improvement on H/W decoding. The proposed schemes are tested with a commercialized streaming service platform, which reveals the reduction of presentation latency as large as a few hundred milliseconds and reaches the acceptable level (about 100 milliseconds).

• Journal of Convergence for Information Technology
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• v.11 no.10
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• pp.1-9
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• 2021

Although interest in the metaverse increases due to the pandemic, the understanding of the metaverse interest factor, which is an essential element for the sustainability of any metaverse platform, is lacking. This study aims to reveal the interest factors of metaverse services by analyzing user community discourse. We collected user community discourses from and applied LDA to extract topics. Further, we categorize the factors into growth and verifiable indicators, various levels of interaction, self-expression and freedom, and connection with the real world. The content planning direction of the game-based metaverse of utilization was derived. This study is meaningful in that it analyzes the interest factors of the metaverse based on the empirical evidence of user discourse data.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.3
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• pp.305-310
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• 2019

Survival horror games aim to seek cathartic psychological escapism from the framed fear or hostile environment. However, if the goal of the game playing is only "survival" against hostile environment, the motivation of such environment adaptive games may not be based on the framed fear. We may call such games as "environment adaptive survival games". In this paper, we analyze the contents of six such survival games that have large user groups in Steam platform based on the pilot survey. We extract 13 almost common fun elements that induce the fun of such games. An online user survey was conducted through multiple survival game cafe to investigate who play such games. There was no gender differences in playing time but females prefer constructing tools as a fun element and play puzzle and simulation games more than males. We found that survival games could be welcomed by female users under 30 years old if 'horror' element was minimized.

• Journal of Digital Convergence
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• v.18 no.12
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• pp.507-512
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• 2020

In recent years, various virtual reality games are becoming commercialized. A variety of large 3D online games popular with users has begun to transform into VR games. < the Elder Scrolls V: skyrim VR > as a derivative of large-scale 3D online games < the Elder Scrolls V: skyrim special edition >, Since its launch on the steam game platform in April 2018, because of its original UI design, maximizes the user's immersive experience and firmly maintains the leading position of VR games. Although the visual similarities between < the Elder Scrolls V: Skylim VR > and < the Elder Scrolls V: Skylim Special Edition > are high, but the visual elements in the UI are quite different. This paper studies characters, scenes, operating interfaces, colors and fonts five visual UI elements that enhance the immersion in game. It provided a unique interface design reference to immersive experience of new VR games in the future.

• Journal of the Korea Society of Computer and Information
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• v.27 no.4
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• pp.45-51
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• 2022

Due to the spread of COVID-19, many local governments are burdened with the influx of large-scale tourists. As a climate that values Work-Life-Balance has emerged, interest in individual life and satisfaction is rapidly increasing. In addition, due to the popularity of the metaverse field, many people are increasingly interested in related content. In particular, "Animal Crossing: New Horizons" sold more than 15 million copies in 2020, and is enjoying exchanges of interior design, fishing, and collecting insects here. In line with this trend, this study introduces the development of online fishing games based on Jeju infrastructure. This paper focuses on implementation and development, and in particular, it introduces differentiated games through character animation optimized for developing a topographic model that maximizes the beauty of Jeju Island's topography based on the Unity 3D engine.

• Journal of Korea Entertainment Industry Association
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• v.8 no.2
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• pp.283-297
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• 2014

The future of human life is expected to be innovative by increasing social, economic, political and personal, including all areas of life across the multi-disciplinary skills. Particularly, in the field of robotics and next-generation games with robots, by multidisciplinary contributions and interaction, convergence between technology is expected to accelerate more and more. The purpose of this study is that by new interface model beyond the technical limitations of the "human-robot interface technology," until now and time and spatial constraints and through fusion of various modalities which existing human-robot interface technologies can't have, the research of more reliable and easy free "human-robot interface technology". This is the research of robot game system which develop and utilizing real time synchronization engine linking between biped humanoid robot and the behavior of the position value of mobile device screen's 3D content (contents), robot (virtual robots), the wireless protocol for sending and receiving (Protocol) mutual information and development of a teaching program of "Direct Teaching & Play" by the study for effective teaching.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.89-90
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• 2015

ICT 기술발전에 힘입어 게임은 짧은 시간 동안 기술적으로 큰 발전을 이뤄냈다. 최근에 들어서는 증강현실(AR;Augmented Reality), 가상현실(VR;Virtual Reality) 기술의 연구가 활발한데, 이는 사용자가 직접 게임의 가상공간에서 활동함으로써 독보적인 사용자경험을 제공할 수 있다는 점에서 차세대 게임 기술로 주목받고 있다. 그러나 AR VR 기술은 현재 상용화가 어려우며, 더 다양한 분야의 연구성과가 뒷받침되어야 비로소 구현이 가능하다는 점에서 근미래 게임기술의 목표로 삼기에는 부적합하다. 이에 반해 연관현실(Relative Reality) 플랫폼은 기술적인 요소의 비중이 큰 AR VR과는 다른 방법으로 현실과 가상현실을 엮어낸다. 연관현실은 현실에 가상현실을 더하는 AR과 현실에 기초한 가상현실을 구현하는 VR과 달리, 현실과 가상현실의 상호작용에 주목하고 있다. 이에 따라 연관현실 플랫폼은 기존 게임과는 차별화된 사용자경험을 제공하고, 현재의 기술 수준으로 지속가능한 개발이 가능하며, 향후 AR VR을 통한 대체현실 구현에 기여할 수 있다는 점에서 그 가치가 높다.

• Journal of Korea Multimedia Society
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• v.21 no.8
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• pp.1021-1026
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• 2018

3D SCAN enables easy human body measurement via a digital method in the process of film costume production which used to be done manually. Software-oriented computer graphic, which integrates 3D SCAN data in the process of manual film costume production, can induce quick and diverse design outcomes. While, 3D PRINT, which integrates computer graphic data in the process of manual film costume production, can automate the process of special costume production using a digital method. Integration of 3D Scan + Computer Graphic + 3D Print using integrated platforms for tailored costume production as developed in this study allows significant reduction of costume production period and costs. It also allows efficient integration of costume production outcomes in various industries related with OSMU contents in particular. In other words, using it, we can create a new business market that integrates multiple areas of film content, drama content and game content.